RequestMode enum
The mode read-only property of the Request interface contains the mode of the request (e.g., cors, no-cors, same-origin, navigate or websocket.) This is used to determine if cross-origin requests lead to valid responses, and which properties of the response are readable.
Values
- sameOrigin → const RequestMode
-
If a request is made to another origin with this mode set, the result is an error. You could use this to ensure that a request is always being made to your origin.
const RequestMode('same-origin')
- noCors → const RequestMode
-
Prevents the method from being anything other than HEAD, GET or POST, and the headers from being anything other than simple headers. If any ServiceWorkers intercept these requests, they may not add or override any headers except for those that are simple headers. In addition, JavaScript may not access any properties of the resulting Response. This ensures that ServiceWorkers do not affect the semantics of the Web and prevents security and privacy issues arising from leaking data across domains.
const RequestMode('no-cors')
- cors → const RequestMode
-
Allows cross-origin requests, for example to access various APIs offered by 3rd party vendors. These are expected to adhere to the CORS protocol. Only a limited set of headers are exposed in the Response, but the body is readable.
const RequestMode('cors')
-
A mode for supporting navigation. The navigate value is intended to be used only by HTML navigation. A navigate request is created only while navigating between documents.
const RequestMode('navigate')
- websocket → const RequestMode
-
A special mode used only when establishing a WebSocket connection.
const RequestMode('websocket')
Properties
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Constants
-
values
→ const List<
RequestMode> - A constant List of the values in this enum, in order of their declaration.